... : 1. Several material f or oil seal, O-Ring and rubber gasket like: NBR, HNBR, CR, PDFE, EPDM, SILICONE, VITONE, ... of Oil seal, O-Ring , Rubber seal, Rubber gasket, Rubber ring, Sealing ring, Sealing gasket. FKM RUBBER O-RING SEAL characteristics are as ... follows1. Can be heat-resistant to 250 °C ...